①男演员只要名字为3个字的前两人

②女演员只要姓杨的，并且不要第一个

③把过滤后的男演员姓名和女演员姓名合并到一起

④遍历所有数据

1，一般写法：

  1. public class Text02 {
  2.     public static void main(String[] args) {
  3.         ArrayList<String> list = new ArrayList<>();
  4.         Collections.addAll(list, "迪丽热巴", "宋远桥", "苏星河", "老子", "庄子", "孙子", "洪七公", "乔大峰", "欧阳锋");
  6.         ArrayList<String> list1 = new ArrayList<>();
  7.         Collections.addAll(list1,"杨颖", "杨洋", "张三丰", "赵丽颖", "张二狗", "杨广武", "杨超越");
  9.         //男演员：
  10.         //过滤filter
  11.         Stream<String> stream = list.stream().filter(new Predicate<String>() {
  12.             @Override
  13.             public boolean test(String s) {
  14.                 return s.length()==3;
  15.             }
  16.         }).limit(2);
  18.         //女演员：
  19.         //过滤filter
  20.         Stream<String> stream1 = list1.stream().filter(new Predicate<String>() {
  21.             @Override
  22.             public boolean test(String s) {
  23.                 return s.startsWith("杨");
  24.             }
  25.         }).skip(2);
  27.         //合并两个流；并遍历输出
  28.         Stream.concat(stream, stream1).forEach(s -> System.out.println(s));
  30.     }
  31. }

2，省略的链式编程写法：（Lambda）

  1. public class Text02 {
  2.     public static void main(String[] args) {
  3.         ArrayList<String> list = new ArrayList<>();
  4.         Collections.addAll(list, "迪丽热巴", "宋远桥", "苏星河", "老子", "庄子", "孙子", "洪七公", "乔大峰", "欧阳锋");
  6.         ArrayList<String> list1 = new ArrayList<>();
  7.         Collections.addAll(list1,"杨颖", "杨洋", "张三丰", "赵丽颖", "张二狗", "杨广武", "杨超越");
  9.         //男演员：
  10.         //过滤filter
  11.         Stream<String> stream1 = list.stream().filter(s -> s.length() == 3).limit(2);
  13.         //女演员：
  14.         //过滤filter
  15.         Stream<String> stream2 = list1.stream().filter(s -> s.startsWith("杨")).skip(2);
  17.         //合并两个流；并遍历输出
  18.         Stream.concat(stream1, stream2).forEach(s -> System.out.println(s));
  20.     }
  21. }